Season the chicken breasts with salt, pepper, and Cajun seasoning. Heat olive oil in a skillet over medium-high heat and sear chicken for 6-7 minutes on each side until cooked through. Remove and let rest.

Boil a pot of salted water and cook the pasta according to package instructions until al dente (8-10 minutes). Reserve 1 cup of pasta water before draining.

Melt butter in the same skillet, add garlic, and sauté for 1 minute. Stir in Cajun seasoning and smoked paprika. Pour in heavy cream and chicken broth, simmer for 4-5 minutes.

Reduce heat and stir in Parmesan cheese until melted. Add cooked pasta and sliced chicken, tossing to coat. Adjust consistency with reserved pasta water if needed.

Garnish with parsley and extra Parmesan, serve hot.